From 22c30e165ab4d8b2afaf49d66dd15a608e106801 Mon Sep 17 00:00:00 2001
From: Matt Keeter <matt.j.keeter@gmail.com>
Date: Mon, 16 Mar 2015 17:18:09 -0400
Subject: [PATCH] Add begin/endNativePainting to Viewport::drawBackground

---
 src/ui/viewport/viewport.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ui/viewport/viewport.cpp b/src/ui/viewport/viewport.cpp
index ba980547..e331b2ab 100644
--- a/src/ui/viewport/viewport.cpp
+++ b/src/ui/viewport/viewport.cpp
@@ -443,10 +443,12 @@ void Viewport::pan(QVector3D d)
 
 void Viewport::drawBackground(QPainter* painter, const QRectF& rect)
 {
-    Q_UNUSED(painter);
     Q_UNUSED(rect);
+
+    painter->beginNativePainting();
     glClearColor(0.0, 0.0, 0.0, 0.0);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    painter->endNativePainting();
 }
 
 void Viewport::drawForeground(QPainter* painter, const QRectF& rect)